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Grade Calculator – Weighted Class Grade, Points & Test Score Calculator

Enter your scores below to calculate your current class grade exactly the way your teacher does – by weighted categories (homework 20%, exams 50%…) or by total points earned. You’ll get your grade as a percentage and a letter, plus something no syllabus tells you: your best-case and worst-case final grade based on the weight still outstanding. Grading papers instead? Jump to the test score calculator for teachers.

Grade Calculator

Category / AssignmentScore (%)Weight (%)
Current Grade
–
Letter Grade
–
Weight Graded
0%

Weights that don’t total 100% are normalized automatically – that’s the correct math mid-semester when some categories haven’t been graded yet. Results are estimates; your teacher’s gradebook is official.

The Math

How to Calculate Your Grade with Weighted Percentages – Formula & Example

In a weighted class, each syllabus category is worth a fixed slice of your grade no matter how many assignments it contains. Multiply each category’s average by its weight and add them up:

Weighted Grade = (Score₁ × Weight₁) + (Score₂ × Weight₂) + (Score₃ × Weight₃) + …
CategoryYour AverageWeightContribution
Homework92%20%18.40
Quizzes85%25%21.25
Midterm Exam78%30%23.40
Project95%25%23.75
Current Grade–100%86.8% B+

Notice what the weights do: the 78% midterm contributes more to the final number (23.4 points) than the 92% homework average (18.4 points), because the exam category is half again as heavy. That’s the whole logic of weighted grading – where you score matters as much as what you score.

The trap students fall into: grinding out perfect homework in a 20% category while coasting into a 30% exam. A 5-point improvement on the midterm is worth exactly 1.5 points on your final grade; the same 5 points on homework is worth 1.0. Read your syllabus weights before you budget your study hours.
The Other System

How to Calculate Your Grade Based on Total Points

Many teachers skip categories entirely and run a points-based gradebook: every assignment has a point value, every point counts equally, and your grade is simply:

Grade = ( Points Earned ÷ Points Possible ) × 100

Earned 434 of 500 possible points so far? You’re at 86.8%. Switch the calculator above to Points mode and it totals everything as you type. The strategic difference from weighted grading: in a points class, a 100-point test is literally worth ten 10-point quizzes – so scan the syllabus for the big-point items and treat them accordingly. In a weighted class the opposite can be true: a 10-point quiz inside a 40% exam category can move your grade more than a 100-point packet in a 15% homework category.

Not sure which system your class uses? If the syllabus lists percentages next to category names (“Tests – 40%”), it’s weighted. If it just lists assignments with point values, it’s total points.

Plan Ahead

Your Best-Case and Worst-Case Grade – What’s Still Mathematically Possible

The number most grade calculators never show you: with part of the course still ungraded, your final grade isn’t a point – it’s a range. The calculator above computes it live:

  • Best case = your current weighted points + 100% on every remaining assignment. At 86.8% with half the course graded, a perfect finish caps you at 93.4% – so an A is still alive, but an A+ isn’t.
  • Worst case = your current weighted points + zero on everything left: 43.4% in the same scenario. Grim, but useful – it’s the floor your banked work has already guaranteed.
  • The range narrows every week. Early in the term almost anything is possible; by finals week the range is tight, and knowing its edges tells you whether the grade you want requires a strong final – or is already locked in either direction.

Once you know your target sits inside the range, get the exact number: the final grade calculator tells you the precise score you need on the final exam to land it.

For Teachers

Test Score Calculator (EZ Grader) – Grade a Stack of Papers Fast

Grading tests? Enter the number of questions once, then just change the number wrong for each paper – the score and letter grade update instantly. It’s the classic EZ grader workflow without the cardboard wheel:

Score
–
Letter
–
Correct
–

Tip: on a 20-question test, 1 wrong = 95% (A) · 2 wrong = 90% (A-) · 3 wrong = 85% (B) · 4 wrong = 80% (B-).

Reference

Percentage to Letter Grade Chart – What Letter Is Your Grade?

Both calculators on this page convert percentages to letters using the standard US scale below. Some schools use straight 90/80/70/60 cutoffs without plus/minus – your syllabus wins. To convert a letter grade onward to grade points, see the full chart on the GPA calculator hub.

PercentageLetter
97–100%A+
93–96%A
90–92%A-
87–89%B+
83–86%B
80–82%B-
PercentageLetter
77–79%C+
73–76%C
70–72%C-
67–69%D+
63–66%D
Below 63%F
Common Questions

Grade Calculator FAQs

How do I calculate my grade with weighted percentages?
Multiply each category average by its syllabus weight and add: 92% homework × 20% + 85% quizzes × 25% + 78% midterm × 30% + 95% project × 25% = 86.8%, a B+. The calculator above does it live and normalizes if weights don’t total 100%.
How do I calculate my grade based on points?
Points Earned ÷ Points Possible × 100. Earned 434 of 500 points = 86.8%. Switch the calculator to Points mode and it totals everything for you.
What if my weights don’t add up to 100%?
Normal mid-semester – ungraded categories haven’t landed yet. Normalize by dividing your weighted total by the weight entered: 43.4 points across 50% graded = 86.8% current grade. The calculator handles this automatically and shows the outstanding weight.
What’s the highest grade I can still get?
Current weighted points + (remaining weight × 100). At 86.8% with 50% graded, a perfect finish = 93.4% max; a total collapse = 43.4% floor. The best/worst-case bar above computes your exact range.
What letter grade is 86.8%?
A B+ on the standard scale (87–89% = B+ starts at 87, so 86.8% rounds to B+ at schools that round to whole numbers – strictly it’s a high B). Check whether your school rounds; the chart above shows all cutoffs.
How do teachers calculate test scores quickly?
(Total − Wrong) ÷ Total × 100. On 20 questions: 2 wrong = 90%. The test score calculator above works like an EZ grader – set the question count once and change only the number wrong per paper.
What do I need on my final exam?
Required Final = (Desired − Current × (1 − Final Weight)) ÷ Final Weight. At 86.8% wanting 90% with a 30% final, you need 97.5%. The final grade calculator solves it instantly and flags impossible targets.
Is my class graded by categories or total points?
If your syllabus lists percentages next to categories (“Tests – 40%”) it’s weighted; if it just lists point values per assignment it’s total points. The strategy differs: in weighted classes the category matters most, in points classes the big-point assignments do.